[TowerTalk] US Tower "MA" Series Tubular Towers

[Dave D'Epagnier]

Their wind rating must be WAY conservative. A friend of mine has had an
MA-850 with a C4 on top for about 5 years. Every year we get 100MPH+
winds here in Boulder. In fact we had a 103MPH gust just last night. He
lowers it to 50' when not operating, and has had no problems. I'm not
suggestiong that that the wind rating be ignored, just making an
observation.

--Dave
K0QE


> ----------
> From: 	Steven H. Sawyers n0yvy[SMTP:sawyers@inav.net]
> Sent: 	Tuesday, February 02, 1999 11:51 PM
> To: 	owner-towertalk@contesting.com; towertalk@contesting.com
> Subject: 	Re: [TowerTalk] US Tower "MA" Series Tubular Towers
> 
> 
> They are rated at 50 mph for their wind loads. 
> 
> I have spent a lot of time trying to help local hams engineer them in
> an 
> 80 MPH wind district. We finally had to house bracket them and
> restrict
> elevation to 40 feet to get them to meet EIA-222 rev F. This with the 
> standard three element tri-bander and a 10 element 2 meter beam i.e. 
> not much of an antenna load.
> 
> I personally do not recommend their use. I wish they would redesign
> them for realistic wind districts and antennas.
> 
> de n0yvy steve
> 
> At 02:04 AM 2/2/99 -0500, owner-towertalk@contesting.com wrote:
> >
> >Anyone have any experience with the "MA" Series tubular crank-ups
> from US
> >Tower?  If so, please let me know as I am considering the purchase of
> the
> >MA-550.
> >
> >Tnx,
> >Don Allen W9CW
> >Urbana, IL	
> >
> >
> >--
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> 
> 
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